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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Effects of Calcium Nitrite-Based Corrosion Inhibitor and Fly Ash on Compressive Strength of High-Performance Concrete
Author(s): Pedro Montes, Theodore W. Bremner, and Donath Mrawira
Publication: Materials Journal
Appears on pages(s): 3-8
Keywords: compressive strength; fly ash; high-performance concrete
Abstract:This paper presents initial results from an extensive study of the effect of calcium nitrite-based corrosion inhibitor (CNI) and fly ash on the properties of high-performance concrete (HPC). A 33 full factorial design was developed to evaluate the influence of water-cement ratio (w/c), CNI, and fly ash on the compressive strength of concrete. Experimental data were analyzed using a three-way analysis of variance (ANOVA). The study found, as demonstrated by previous studies, that when fly ash was used to replace portland cement in a concrete mixture containing silica fume, the 28-day compressive strength decreased. This effect is more pronounced as the w/c decreases from 0.45 to 0.29. At a w/c of 0.45, only a small reduction in strength is noted when up to 40% of the cement is replaced with fly ash, whether CNI is used or not. When CNI is added to a concrete mixture with or without fly ash, it does not adversely affect the compressive strength.
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